| Operation voltage[V] | Butane 100%[cpm] | Butone 0%[cpm] |
| 3900 | 0 | 23 |
| 4000 | 3 | 138 |
| 4100 | 29 | 431 |
| 4200 | 94 | 690 |
| 4300 | 148 | 954 |
| 4400 | 311 | 1389 |
| 4500 | 402 | 2126 |
| 4600 | 540 | 2652 |
| 4700 | 837 | 3093 |
| 4800 | 1165 | 3542 |
| 4900 | 1398 | 3819 |
| 5000 | 2185 | 4177 |
When there is no butane gas which is prevention gas, there are many counts.
If the existence of radiation is investigated, butane gas is not needed in order to make sensitivity high.
If butane gas is put in, the number of counts will rise rapidly more than from operation voltage 4600V.
From about 4100 to 4600V are stable. This range is suitable for measurement.
It is designed to be set to operation voltage 4232V at Vpp=9.
Measurement unit
- cps:count per second
- cpm:count per minute